Aerosol Measurements

Here, we present preliminary observations of the free tropospheric aerosols (particles) intercepted at the Observatory in 2015, 2016 and 2017. These particles were likely transported for long distances over the Atlantic from surrounding continents.

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Aerosol Concentrations

The following graphs depict the atmospheric aerosol number concentration (particles of size above 0.3 micrometers in green and 0.4 micrometers in blue) time series.

2018

August 2018

2017

September 2017August 2017July 2017June 2017

2016

The particle counter stopped running on August 3rd, but the scattering data (below) are still acquired.

July 2016June 2016May 2016

2015

October 2015September 2015August 2015July 2015June 2015

Aerosol Light Scattering

The following graphs depict the time series of the aerosol ability to scatter solar radiation (at three different wavelengths: blue, green and red), which is a climate-relevant aerosol measurement.